| 摘要 |
PCT No. PCT/EP94/03005 Sec. 371 Date May 8, 1995 Sec. 102(e) Date May 8, 1995 PCT Filed Sep. 8, 1994 PCT Pub. No. WO95/07449 PCT Pub. Date Mar. 16, 1995A method of determining a combustion air ratio of a reciprocating-piston internal combustion engine includes the steps of measuring a gradient of a combustion chamber pressure as a function of a position of a piston in a piston cylinder, for at least one operating cycle of the engine. Measured signals are formed representing the gradient of the combustion chamber pressure. The measured signals are digitized and entered into a programmed evaluation unit, where they are evaluated on the premise that energy prior to combustion and energy following or toward the end of combustion are at least approximately equal. Further, they are evaluated based on the equation <IMAGE> +TR <IMAGE> A value of the combustion air ratio is calculated from the evaluated digitized measured signals in an iterative computation process, and the value is displayed. |
